[Python-Dev] pep 362 - 5th edition

[Yury Selivanov]

Nick,

I started a new branch to experiment with immutable Signatures.

So far, almost everything works (except a couple unit-tests, that are
modifying now immutable Parameters & Signatures)

https://bitbucket.org/1st1/cpython/changesets/tip/branch(%22pep362-2%22)

I hope tomorrow we get some feedback on this, and if it's positive - 
I'll finish off the implementation and update the PEP.

I hope we still can make it to 3.3.

-
Yury